Haven't been showing off lately..

Very nice, congrats. So you run her unbalanced?

3dB of Cut/boost....makes me wonder....you must have a (acoustically) well treated room then??

Yep, unbalanced it is. There's a Mundorf Supreme cap in the output, nice cap.

+/-3dB.. It's definately enough! I very rarely use more EQ than that. The acoustics in my room are good, and 0,5dB has always been audible. When changing levels digitally, about 0,25 dB is still audible.

If I had designed it for more boost (and cut), I'd have had to think the gain make-up differently. A higher gain tube at least. The beauty of DIY is that you know exactly how you use these things and where you use them. I know the load this thing is feeding, so I got away with 22uF cap in the output. I know I don't need more than +3dB, so I could have a simple gain make-up amp..

what a beauty - I absolutely love clean and simple panels!

congrats,
christoph

crisotop said:

what a beauty - I absolutely love clean and simple panels

Click to expand...

Me too, and it extends to the functions, too. I like simple equipment and restrictions that make you find the simpliest way to achive something in sound. My tools need to be something that don't require thinking when I'm working. I can honestly say there's nothing but blank in my head when I'm doing my job, listening.

Viitalahde said:

about 0,25 dB is still audible.

Click to expand...

I wish I had such great hearing as yours! I guess you don't listen MP3s
Great build! Very inspiring, congrat

I was wondering where the transformers were, but of course it has to be unbalanced. I wonder about hum. I guess you must have pretty strict grounding policy in the whole studio?

Where did you get the panel engraving+paint done? I have about 4 different panel designs that need to be done and was wondering if you might have found some cheap CNC/engraving guy.

I was actually just looking at this before I saw your panel. http://www.aripakaiverrus.fi/index2.html

Very pretty - and I really like how solid it's made, and the knobs and awww...

Rock it! 

The panel was simply from Schaeffer. A bit pricey, but I only order a few panels.

My chain is unbalanced simply because I like to eliminate all the possible balancing/unbalancing I/O stages. This gets a few transformers off the chain, and some op-amps too. The noise floor is low, but I'm working on it making it even better.

Did I mention that you can remove both the top and bottom panel to access everything? I try to build all of my equipment like that from now on.

truly impressive work. Congrats!

Where did you get your tag strip?

Looks great Jaakko. Aren't those Jensen input transformers?

Sorr said:

Where did you get your tag strip

Click to expand...

http://www.uraltone.com/kauppa/index.php?cPath=76_105

Looks like they accept PayPal 'n all now. Great shop, it's nearby me.

Gold said:

Looks great Jaakko. Aren't those Jensen input transformers?

Click to expand...

Thanks Paul. They're Sowters, 9545 is the model I think. The biggest 4:1 I could get - and easy to mount, too.

wow, super sweeeet.
who makes that power trans?

Pure sex.  Did you make an extra port so you can make sweet love to it too?

I would have if it were mine..  ;D